English

The excluded minors for GF(5)-representable matroids on ten elements

Combinatorics 2025-04-17 v2

Abstract

Mayhew and Royle (2008) showed that there are 564 excluded minors for the class of GF(5)-representable matroids having at most 9 elements. We enumerate the excluded minors for GF(5)-representable matroids having 10 elements: there are precisely 2128 such excluded minors. In the process we find, for each i{2,3,4}i \in \{2,3,4\}, the excluded minors for the class of Hi\mathbb{H}_i-representable matroids having at most 10 elements, and the excluded minors for the class of H5\mathbb{H}_5-representable matroids having at most 13 elements.

Cite

@article{arxiv.2307.14614,
  title  = {The excluded minors for GF(5)-representable matroids on ten elements},
  author = {Nick Brettell},
  journal= {arXiv preprint arXiv:2307.14614},
  year   = {2025}
}

Comments

36 pages including 11-page appendix, 2 figures

R2 v1 2026-06-28T11:41:28.570Z